2021222003213 has 12 divisors (see below), whose sum is σ = 2453444278560. Its totient is φ = 1657150958232.

The previous prime is 2021222003179. The next prime is 2021222003261. The reversal of 2021222003213 is 3123002221202.

It is a happy number.

It is not a de Polignac number, because 2021222003213 - 2¹² = 2021221999117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021222903213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 896725583 + ... + 896727836.

It is an arithmetic number, because the mean of its divisors is an integer number (204453689880).

Almost surely, 2^{2021222003213} is an apocalyptic number.

2021222003213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2021222003213 is a deficient number, since it is larger than the sum of its proper divisors (432222275347).

2021222003213 is a wasteful number, since it uses less digits than its factorization.

2021222003213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793453456 (or 1793453449 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2021222003213 its reverse (3123002221202), we get a palindrome (5144224224415).

The spelling of 2021222003213 in words is "two trillion, twenty-one billion, two hundred twenty-two million, three thousand, two hundred thirteen".